The scientific team that used YouTube videos to determine the trajectory of the Chelyabinsk meteor used the same method to track the trajectory of the bright meteor that crossed the sky over Cuba on February 1.
An atmospheric scientist explains why water can do some strange-looking things at very cold temperatures, and what's different about snowfalls on Mars.
How could global warming be bringing the life-threatening cold to the central US this week? Scientists don't have all the answers, but, they say, the jet stream is the link.
Most scientists believe the moon and Earth have been bombarded by meteorites at a constant rate for the past few billion years. New research suggests that - in the past 300 million years - it's been happening 2 to 3 times more frequently.
One of the most cherished science fiction scenarios is using a black hole as a portal to another dimension or time or universe. Is it possible? Maybe. But choose carefully. All black holes are not created equal.
A study traces black carbon from 1991 Kuwait oil fires to ice in northern Tibet. Researchers say this soot could affect glacier melt at the Tibetan plateau, considered the "Water Tower of Asia."
The elusive fossa, deepsea corals and a tropical frog which has developed resistance to a deadly fungus. Here are 3 stories from 2018 that remind us how awesome the animal world is.
Sure it is, says this physicist, but only if you have an object with infinite mass. Here’s the story of how to build a time machine, with a design that's deceptively simple.
Earlier this year, scientists were surprised to discover a huge forest of coldwater corals off the coast of South Carolina. A scientist aboard the expedition discusses the find.
Members of the EarthSky community - including scientists, as well as science and nature writers from across the globe - weigh in on what's important to them.